考虑X2接口时延的系统仿真方法与CoMP性能分析

doi:10.13190/jbupt.201304.111.zhouwa

北京邮电大学学报 ›› 2013, Vol. 36 ›› Issue (4): 104-109.doi: 10.13190/jbupt.201304.111.zhouwa

考虑X2接口时延的系统仿真方法与CoMP性能分析

周文安¹, 王国伟¹, 张屹宇¹, 李慧琴¹, 任晓涛²

1. 北京邮电大学计算机学院, 北京 100876;
2. 华为技术有限公司, 北京 100095

收稿日期:2012-10-16 出版日期:2013-08-31 发布日期:2013-05-22
作者简介:周文安(1971—),女,副教授,E-mail:zhouwa@bupt.edu.cn.
基金资助:
国家科技部重大专项项目(2012ZX03001033);华为公司创新研究计划项目(未来LTE系统中CoMP关键技术的研究)

CoMP Performance When Considering X2 Backhaul Delay

ZHOU Wen-an¹, WANG Guo-wei¹, ZHANG Yi-yu¹, LI Hui-qin¹, REN Xiao-tao²

1. School of Computer Science, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2. Huawei Technologies Company Limited, Beijing 100095, China

Received:2012-10-16 Online:2013-08-31 Published:2013-05-22

摘要/Abstract

摘要：

为了评估LTE-A系统中X2接口时延对多点协作传输(CoMP)技术的实施所带来的影响,建立了有时延的系统信道模型,搭建了非零时延CoMP技术的系统级仿真平台,仿真了3种典型的CoMP方案. 分析了系统性能、协商复杂度以及时延敏感程度的关系,指出系统性能随着时延的增加而急剧下降,系统对时延的敏感度随着协商复杂度的提高而增加,在回程时延大到一定值时,CoMP技术便不再适用于LTE-A系统.

关键词: 多点协作传输, 时延, 系统级仿真

Abstract:

To evaluate the influence of X2 interface time delay in long term evolution-advanced (LTE-A) system, we establish the channel model with time delay and conduct the system level simulation of three typical coordinated multipoint transmission/reception(CoMP) schemes. Finally, we evaluate the system performance at different time delay with different complexity of negotiation. It can be seen that the system performance will degrade with time delay increasing and the system will be more sensitive to delay when the negotiation becomes more complex. What's more, if the X2 interface time delay grows to a certain threshold, it's better not to apply CoMP in LTE-A system.

Key words: coordinated multipoint transmission/reception, delay, system level simulation

中图分类号:

TN929.5-34

周文安, 王国伟, 张屹宇, 李慧琴, 任晓涛. 考虑X2接口时延的系统仿真方法与CoMP性能分析[J]. 北京邮电大学学报, 2013, 36(4): 104-109.

ZHOU Wen-an, WANG Guo-wei, ZHANG Yi-yu, LI Hui-qin, REN Xiao-tao. CoMP Performance When Considering X2 Backhaul Delay[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2013, 36(4): 104-109.

参考文献

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考虑X2接口时延的系统仿真方法与CoMP性能分析

CoMP Performance When Considering X2 Backhaul Delay

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